Related Experiment Video
Updated: Nov 28, 2025
An Ex vivo Assay to Study Candida albicans Hyphal Morphogenesis in the Gastrointestinal Tract
Published on: July 1, 2020
Ethanol extracts from Cinnamomum camphora seed kernel: Potential bioactivities as affected by alkaline hydrolysis and
Guohua Zhang1, Xianghui Yan2, Shasha Wu2
1State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China; Institute of Biological Resources, Jiangxi Academy of Sciences, Nanchang 330096, China; Jiangxi Province Key Laboratory of Edible and Medicinal Resources Exploitation, Nanchang University, Nanchang 330031, China.
Abstract:
The aim of the study was to evaluate the changes of potential bioactivities of ethanol extracts (EE) from Cinnamomum camphora seed kernel (CCSK) after alkaline hydrolysis and simulated gastrointestinal digestion. A total of 13 compounds in EE, mainly phenolics and saponins were tentatively identified using HPLC-ESI-QTOF-MS2 analysis. The total phenolic and total flavonoid contents in EE decreased by 30.6%, 1%, 33% and 11.8% after hydrolysis and digestion, respectively. The total saponins content decreased by 17% after hydrolysis while increased by 48% after digestion. The total condensed tannin contents increased by 70.3% and 17.2% after hydrolysis and digestion, respectively. The 1,1-diphenyl-2-picrylhydrazyl (DPPH), 2,2'-azino-bis-(3-ethylbenzothiazoline-6-sulfonic acid (ABTS), cupric ion reducing activity (CUPRAC), ferric reducing antioxidant power (FRAP) and metal chelating activity (MCA) were used to determine antioxidant activity. Overall, the changes of antioxidant activities by hydrolysis and digestion were consistent with the changes of their total phenolic and flavonoid contents. The α-amylase and α-glucosidase inhibitory activities in EE increased by 817% and 33.3% after digestion while decreased by 12.3% and 19% after hydrolysis, respectively. Although the inhibitory activities of cholinesterase, tyrosinase and xanthine oxidase were decreased by hydrolysis and digestion, most of these activities were retained. These results showed that CCSK ethanol extracts had strong bioactivities and were reasonably stable to alkali and digestive enzymes.
